tl;dr version: Memcache is a great cache. Redis is a great data store which also works as a great cache. Memcache has a few advantages for some use cases, but

tl;dr version: Memcache is a great cache. Redis is a great data store which also works as a great cache. Memcache has a few advantages for some use cases, but generally speaking, you won’t go wrong if you choose Redis over memcache.